In the fictional Star Fleet Universe, the Kzinti Hegemony is a powerful stellar empire violently opposed to the Lyran Star Empire and allied with the Hydran Kingdom and eventually with the United Federation of Planets and the Gorn Confederation in the General War.
In the fictional variant of the Star Fleet Universe as represented in the games Star Fleet Command II: Empires at War and Star Fleet Command: Orion Pirates from Taldren, the Kzinti Hegemony was named the Mirak Star League, with the species Kzinti renamed for SFC to the Mirak.
The Kzinti originally come from Larry Niven's Known Space stories. Niven adapted his story "The Soft Weapon" as an episode of Star Trek: The Animated Series, "The Slaver Weapon". The epidode also mentioned that the Kzinti had fought four wars with the Federation, and lost all of them. The Kzinti have never been mentioned in any Paramount productions since The Animated Series, and by current canon, they do not exist in the Star Trek Universe.
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